vloop.c is our source code, we haven't decided as whether to open source it, so it's not available at this time.

In addition, so far, we only made sure our vboot works well on Ubuntu and Fedora, for other distributions, it may not be that easy.

We are working on a new implementation that will not depend on Linux kernel, and one can deploy only the binaries to make a linux to boot from vhd. It's still not as performing as our vloop kernel module, which is holding its release.